Use the project reference consistently.
Requests, supplier orders, site receipts, material issues, documents and financial entries should carry the project context needed for responsibility and reporting.
Control purchasing before materials reach site.
Approval levels, supplier selection, budgets and supporting documents should be clear before the purchase order is committed.
Separate ERP control from specialist engineering tools.
Quantity surveying, BIM, engineering measurement and property-management tools may remain separate. ERP should own the commercial, material and financial controls it can manage reliably.
Test with a real site transaction.
Choose a material request or subcontractor case and trace it through approval, procurement, receipt, site evidence and finance. That shows where integration or customization is genuinely needed.
Hybrid ERP perspective: This guidance explains implementation practice. The accepted proposal and project documents define the actual customer scope, responsibilities and commitments.